how to open elf file image from inside genode? libbacktrace question

[Christian Helmuth]

Alexander,

On Fri, Apr 09, 2021 at 13:07:37 CEST, Alexander Tormasov via users wrote:
> > On Thu, Apr 08, 2021 at 18:18:01 CEST, Alexander Tormasov via users wrote:
> >> page fault, pd='init' thread='ep' cpu=0 ip=0xb1d73 address=0x401eeffc stack pointer=0x401eeff0 qualifiers=0x6 irUWp reason=1
> > 
> > The fault address is in the stack area and looks suspicious:
> > 0x401eeff0 is 4100 bytes below 64K of stack. Could it be your stack
> > size is 64K which does not suffice your use case?
> 
> 
> it is really hard to say something about, but in the past 64k was definitely enough.
> I suspect nested "panic in panic" during processing of c++ exceptions…
> 
> while it is hard to say something because of strange debugger work (request 4 more caps from init and hang), I try to find any methods to understand/debug situation…

Sorry but I completely ignored the fact that the failing component is
the root init instance. So, it might help to just remove
ld_verbose="yes" from its config while debugging with Josef's
instrumentation. The change seems to trigger unexpected stack usage in
init which you don't seem to debug currently.

Regards
-- 
Christian Helmuth
Genode Labs

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